Equipment security device

ABSTRACT

A security device for protecting equipment such as typewriters, calculators and the like comprises a flexible pad bondable by adhesive to a mounting surface such as a table or desk, and a cover having depending lugs having holes adapted to register with corresponding loop devices protruding upward from the pad so that lock pins may be passed through the lugs and loops, from openings through the cover, to attach the cover to the pad. Locks are provided to be inserted into the openings after the lock pins have thus been introduced so that the pins cannot be retracted until the locks are unlocked by a key. Means is provided for bolting the equipment to the top of the cover from inside the cover before the cover is attached to the pad. Thus there is no access to the bolts holding the equipment until the locks are removed. The bonding adhesive is so strong in tension that a person cannot lift it off the mounting base. The pad can be removed from the mounting base however after the cover is unlocked and removed, by peeling the pad off the the base.

ite States tent 1 Gassaway EQUIPMENT SECURITY DEVICE [76] Inventor:James Scott Gassaway, 2356 Glendow Ave, Los Angeles, Calif. 90064 [22]Filed: Jan. 2, 1973 [21] Appl. No.: 320,553

[52] US. Cl 248/19, 70/232, 248/25, 248/203 [51] Int. Cl. Fl6b 41/00,E05b 73/00 [58] Field of Search 248/203, 19, 25, 23; 70/58, 181, 232,371

[56] References Cited UNITED STATES PATENTS 2.486.032 10/1949 Jimenez248/203 X 2,764,817 10/1956 Schwartz 248/205 A X 3,128,979 4/1964Damelio 248/25 3464241 9/1969 Wellekens 3.605.460 9/1971 Singer et a170/232 3,616,096 10/1971 Roeder 248/205 A X 3.637.181 1/1972 Janssen248/205 A 3,724,798 4/1973 Lucasey 248/203 X Primary ExuminerJ. FranklinFoss Attorney, Agent, or Firm-Donald D. Mon; D. Gordon Angus 57 ABSTRACTA security device for protecting equipment such as typewriters,calculators and the like comprises a flexible pad bondable by adhesiveto a mounting surface such as a table or desk, and a cover havingdepending lugs having holes adapted to register with corresponding loopdevices protruding upward from the pad so that lock pins may be passedthrough the lugs and loops, from openings through the cover, to attachthe cover to the pad. Locks are provided to be inserted into theopenings after the lock pins have thus been introduced so that the pinscannot be retracted until the locks are unlocked by a key. Means isprovided for bolting the equipment to the top of the cover from insidethe cover before the cover is attached to the pad. Thus there is noaccess to the bolts holding the equipment until the locks are removed.The bonding adhesive is so strong in tension that a person cannot liftit off the mounting base. The pad can be removed from the mounting basehowever after the cover is unlocked and removed, by peeling the pad offthe the base.

10 Claims 10 Drawing Figures Pmmm wz 3,850,392 SHEET 10$ 2 EQUIPMENTSECURITY DEVICE SPECIFICATION This invention relates to security devicesfor fastening equipment such as office equipment, for exampletypewriters, adding machines and computers and other more or lesssimilar equipment such as microscopes, televisions, projectors, safesand the like, to their mounting surfaces; and more particularly to suchsecurity devices which are lockably attached to the mounting surface.

It has long been a problem within business and other organizations andbuildings to avoid loss or misplacement of relatively small costly itemsof equipment such as typewriters and other business machines and thelike due to unauthorized moving of such equipmnet from place to place,and to thievery and burglaries. Various expedients have been used toreduce such unauthorized movement or loss of such equipment. One suchexpedient has been that of bolting and bolt-locking or cable or chainlocking of the equipment to the surface to which it is mounted. A commonmethod of doing this has been to drill holes through the mountingsurface and bolt through the surface into the equipment to be securedthereto. One of the more sophisticated bolting methods has been to placea locked cover over the bolt or stud and nut so that they cannot beeasily removed. But bolting typewriters and desk calculators and thelike to desk tops has frequently made the drawers and writing leavesdirectly beneath the piece of equipment thus bolted, unuseable due tointerference of the bolting device and the drawer or sliding writingleaf. Furthermore, damage to clothes and persons have sometimes resultedfrom such a bolting device on a typewriter or the like snaggingstockings and causing abrasions and cuts on the person. Cabling andchaining also requires bolting the chain or cable to a mounting surfaceand to the equipment.

Other disadvantages of the use of bolts, chains and cables are obvious.Furniture, tables, desks or counters which have had holes drilled inthem for use with one model or type of equipment must have additionalholes in different locations drilled to accommodate a new or differentmodel or type of equipment. Furthermore, when bolted-down equipment ispermanently removed there remain holes in the desk, counter, table orbench, all of which has been a deterrent to the use of bolts forsecurity purposes.

It is also apparent that to achieve successful bolting down of equipmentto a piece of furniture, the frame or case of the equipment must bethick and strong enough to be threaded so that a bolt or stud may bethreaded into it, and the frame or plastic of the equipment must becapable of taking a concentration load at the bolt-down positions sothat the equipment and bolts can successfully resist attempts to movethe equipment. Most plastic cased equipment does not have plastic coversor frames thick enough to distribute the concentrated loads presented bya bolting device during an unauthorized attempt to move the equipment,as for example during a burglary.

Bolting devices also have other drawbacks. One of these is that theyfrequently make installation difficult and time consuming under suchcircumstances as when the underside of the mounting surface is noteasily accessible because of drawers or frame members in a desk,cabinet, bench or table or the like. Also, inaccessible bolts and nutsmake removal of the equipment for periodic maintenance and repair, atime consuming job, frequently interrupting the normal work of personswho would use the equipment.

It is accordingly an object of the present invention to overcome oravoid the foregoing disadvantages of prior known expedients for securingequipment to their mountings.

A related object is to provide a security device which does not mark ordeface commonly used surfaces upon which such equipment is mounted, forexample, formica, hardwoods, metal and other hard surfaces.

Another object is to provide such a security device which can beinstalled and removed by working at only one side of the mountingsurface.

Another object is to provide a device which does not require the makingof holes in the mounting surface.

Another object is to provide such a security device having a portionwhich is temporarily but securely adhered to the mounting surface andwhich need not be removed from the mounting surface when the equipmentis unlocked and removed for service or replacement.

Another object is to provide such a security device having a portiontemporarily but securely adhered to the mounting surface which can beremoved without damage to most mounting surfaces.

A further object is to provide such a device having means preventingaccess to the member adhered to the mounting surface.

A further object is to provide for fastening the equipment by bolts orthe like in such a manner that when the security device is locked thebolts fastening the equipment are not accessible.

Another object is to provide such a security device which can beunlocked from the mounting surface for service or for transfer elsewherewithout requiring the removal of mounting bolts to the mounting surface.

A further object is to provide such a security device which is capableof securing relatively weak framed or cased equipment and the like.

The foregoing objects are carried out according to the present inventionby use of an adhesive pad bondably adherable to a mounting surface andlockably attached to a cover assembly which covers the adhesive pad sothat the pad is essentially exposed only to the mounting surface and theinside of the cover, and is inaccessible from outside the cover.Provision is made for fastening the cover to the pad, inside the coverand locking means is provided for preventing access to the fasteningmeans until the locking means is unlocked.

A feature of the invention resides in the use of an adhesive pad whichis'relatively easily peelable from the mounting surface when access ishad to the pad by removal of the cover. A further feature resides in theuse of an adhesive which though permitting relatively easy peelingrequires much more force to separate the pad from the mounting surfaceby applying tension or shear than the force required for peeling.

A preferred type of adhesive is one which is pressure or both pressureand heat sensitive, that is, the application of pressure even thoughfairly moderate, causes a bonding to the mounting surface which requiresvery great force in tension or shear to cause a separation from themounting surface, but which when heated after adherence to the mountingsurface, permits peeling off the mounting surface with relative ease.When the cover is locked in position over the pad however, access is nothad to the pad to permit either heating or peeling of the pad.

The foregoing and other features of the invention will be betterunderstood from the following detailed description and the accompanyingdrawings, describing and illustrating a specific embodiment of theinvention. In the drawings:

FIG. 1 is an isometric view, from the top, of a cover of a securitydevice according to this invention, shown mounted on a mounting surface;

FIG. 2 is an isometric view of a pad assembly mounted on the mountingbase and attached beneath the cover of FIG. 1 according to thisinvention, and therefore concealed from view in FIG. 1;

FIG. 3 is an isometric view looking upward at the bottom of the covershown in FIG. 1;

FIG. 4 illustrates one of two lock pins shown in FIGS. 6 and 7 whichhold the cover to the pad assembly;

FIG. 5 illustrates one of two locks shown in FIG. 1, which preventremoval of the lock pins shown in FIG.

FIG. 6 is a cross-section view taken at line 66 of FIG. 1 showing inphantom the outline of an equipment such as a typewriter fastened to thecover shown in FIG. 1;

FIG. 7 is a cross-section view at line 7-7 of FIG. 1 illustrating therelationship ofa lock according to FIG. 5 to a lock pin according toFIG. 4 and showing the lock key in phantom;

FIG. 8 is a cross-section view taken at line 88 of FIG. 7;

FIG. 9 is a detail view in cross'section showing an arrangement by whichan equipment like that shown in phantom in FIG. 6 can be attached to thecover; and

FIG. 10 is a detail view in cross-section of an alternate form ofattachment of an equipment which may be used instead of that in FIG. 9.

Referring to the drawings there is shown a security device 10 (shown inFIGS. 1, 6 and 7) according to this invention, comprising a rectangularshaped cover 11 placed over a retangular shaped pad 12 (best shown inFIG. 2) mounted on amounting support 13 which may be. for example, thetop of a table or desk or the like. The pad 12 contains a suitablematerial 14, preferably one which is pliable, a foam material forexample a plastic foam. Where foam material is used an open cell foam ispreferred to a closed cell foam. The top and bottom surfaces of material14 are coated with layers 15 and 16 of permanent adhesive material.

There are adhered to the upper surface of pad 12 by means of theadhesive layer 16, four plates 17a, 17b, 17c and 17d, herein referred tocollectively as plates 17. The plates 17 are preferably ofa rigidmaterial such as metal. Over the respective four plates 17 there areattached plates collectively referred to as 18 and numbered 18a, 18b,18c and 18d respectively which are attached to their respective plates17 by suitable means such as spot welding. Each of the four plates 18 isformed with a pair of spaced collinear loops 19 and the loops of plate18b are collinear with the loops of plate 1811. Likewise the loops ofplates 18c and 18a are all aligned in a collinear arrangement parallelwith, but spaced from, the loops of loop plates 18:: and 18b. Each pairof plates 17 and 18 is provided with aligned central openings 20 and 21which expose the surface of pad 12. These openings are for the purposeof permitting the application of the cover to the pad as will appearhereinafter.

After completing this assembly of the plates on pad 12 the entire uppersurface of pad 12 is preferably covered with a coating of paint or thelike which will cover the adhesive layer 16 so that it will not besticky or tacky, and this paint coating is preferably made to cover theexposed portions of plates 17 and 18. Until the device 10 is put to usethe bottom of adhesive layer 15 of pad 12 will be covered with anon-sticky protective layer of a fabric or material (not shown) of atype commonly used to keep an adhesive layer covered until used. Whenthe device is ready to be used this protective layer will be peeled offfrom the adhesive layer 15 so that the pad may be made to adhere to itsmounting base 13 by laying the pad on the base and applying pressure.

The cover 11 (best seen in FIGS. 1, 3 and 6) has four sides 22a, 22b,22c and 22d which closely fit down over the periphery of pad 12 andsubstantially meet the mounting base 13. One of the end walls 22a isprovided with a pair of holes or openings 23a and 23b. The dimensions ofthe holes are such as to accommodate a cylindrical type lock 24 (FIG. 5)as well as to permit the passage ofa lock pin 25 (FIGS. 4 and 7). Theholes or opening 23a is aligned with holes 26 and 27 through respectiveones of a pair of lugs 28 and 29 attached to and depending from thebottom surface of cover 11, as shown in FIG. 3. The holes 26 and 27 areofa diameter which accommodates one of the lock pins 25. The lugs 28 and29 are conveniently formed by depressing portions of the cover 11 asshown at 28a and 29a in FIG. 1 so that part of each hole 26 and 27 isformed from the depressed portion while the remaining part of the holeis formed by a groove 30 formed at the bottom surface of cover 11 andaligned with holes 26 and 27 and with opening 23a. A similar arrangementof depressed lugs and a groove are related to the notch or opening 23bso that another lock rod 25 may be inserted through opening 23b andthrough the holes of the lugs. Since the two grooves are parallel, thetwo rods to be inserted will likewise be parallel.

Before fitting the cover over the pad the equipment to be protected bythe device will be attached at the top of the cover. For this purposethe cover is provided with four holes 31, preferably near the cornersthrough which attaching screws or bolts may pass. The screw or boltheads 33 will be placed at the under surface of the cover and thethreaded portions of such screws or bolts will pass upwardly to threadinto suitable tapped holes at a bottom surface of the equipment, usuallythrough suitable resilient washers or the like 32 which may be ofneoprene or the like.

With the equipment thus attached to the cover, the cover is brought downover the pad as shown in FIGS. 1 and 6 with the four depressed lugs 28protruding into respective holes 20, 21 at the pad, such that holes 26at the cover are aligned with the openings through respective loops 19at the pad, and also with respective notches 23a or 23b of the cover.The pins 25 are then inserted through the respective holes 23a or 23band through the related openings 19, 26 and 27 so that the cover is nowfastened to the pad by the two pins 25. The length of the pins 25 aresuch that when their forward ends meet the wall 220 of the cover therear of each pin is at a sufficient distance inside wall 22a of thecover to accommodate lock 24.

For the purpose of accommodating locks 24 there are provided cylindricallock housings 34 which form the respective openings 23a and 23b. Thehousings 34 (FIGS. 7 and 8) are part of the casting integral with wall22a of the cover 11 and are at the under surface of the cover. Alsointegral with the under surface of the cover is a depending lug 35having two horizontal bottom edges 36 and 36a separated by a partiallycylindrical surface 37 immediately inside of the inner end of lockhousing 34, which is concave as seen from below. The partial cylindricalsurface 37 is eccentric and of smaller radius of curvature as comparedwith cylindrical housing 34.

The purpose of the cylindrical housing 34 and the lug 37 is toaccommodate the lock 24 and enable it to become locked and unlocked, sothat the corresponding lock pin 25 can be locked within the cover orunlocked to permit extraction of the pin. To look the pin 25 in itslock-in position it is inserted through the respective opening 23a or2312 and through the holes 26 and 27 and loop 19 until the forward endof the pin substantially meets the far side of the cover 220. The lock24 is then inserted through the respective opening 23a or 23b formed bythe cylindrical housing 34 which is dimensioned to fit the outercylindrical barrel 39 of the lock, with the key hole 40 of the locktoward the outside of the cover. The lock is ofthe type having a rotaryspindle 41 which is cylindrical and concentric with the outer barrel 39so that it can rotate within the outer barrel. The spindle 41 is ofsubstantially the same length as the barrel 39 and its inner endterminates where the inner end of the outer barrel terminates. At theinner end of the spindle there is attached a cam 42 which is alsocylindrical but eccentric with the respect to the spindle 41. Thediameter of the cam cylinder 42 is such that it fits within thepart-cylinder 37 of the lock housing. Thus when the lock 39 is fullyinserted within the housing the eccentric cylinder 42 engagespartcylinder 37, while the rear of the lock is flush with the outside ofthe cover side 22a. Under this condition the lock barrel 39 cannotrotate due to the eccentricity of member 42 so that the lock key 55 mayrotate the lock spindle 41 without rotating the lock barrel 39. There isattached at the inner side of eccentric cylinder 42 another cylinder 43which is eccentric with respect to cylinder 42. When the lock 24 is inits locked position as shown in FIGS. 7 and 8, the locking cylinder 0rdisc 43 takes its position in which it is partly in front of lug 37 sothat the lock cannot be withdrawn from its housing. When however the keyis turned 180 from its position shown in FIG. 7 the part of the lockingdisc 43 which is in front of lug 37 in FlG. 7 is now positioned downwardso that its lower portion is substantially even with the lower part oflock spindle 41, in which position the lock may now be withdrawn fromits housing. This is the same position in which the lock must beinserted into the housing. Upon removal of the lock, lock rods 25 may beremoved from their position beneath the cover.

FIG. 9 shows an alternative manner of fastening an equipment to thecover plate 11. This is useful where the equipment to be protected has astrong or thick section 44. Here, the screw having screw head 33 passesthrough a rigid washer 45 and a resilient grommet 46 such as neopreneattached to the cover 11 as shown,

and then threads into the thick section 44 of the equipment.

Where the equipment to be protected has a thin or weak section 47 forattachment, the arrangement of FIG. 10 may be used instead. ln thiscase, the screw having head 33 is passed through the cover 11 andthreaded into a rigid plate 48 thereby holding the plate to the cover. Aresilient or rubbery ring 49 such as neoprene is adhered as by layers49a, 49b of cement or adhesive to the upper side of the plate and theupper side of the ring 49 is similarly adhered by adhesive to thesection 47 of the equipment. The sandwich of ring 49 and its layers 49aand 49b of adhesive shown, have a tensile strength at least as great asthat of the attaching means 33 so it is not the weakest link in thesystem. Hence, if there is a failure in tension it is likely to be dueto the stripping of threads of fastener 33 in the member 11.

The adhesive used for layers 15 and 16 should be one that has a longlife and is slow to deteriorate and does not lose its ability to bondtightly in pure tension or shear, but nevertheless always remainspeelable with the aid of heat and mild solvents and oil combinations.Latex base adhesives are satifactory, and they may be applied byspraying. Such adhesives are available from the Fasson Division of AveryAdhesives, San Marino, Cal. under the trademark Fasmount 2100; and fromMinnesota Mining and Manufacturing Company of Minneapolis, Minn. underthe trademarks Scotch Brand Tapes K4408YEC4CDM3 as well as othercompanies under various trademarks. All such adhesives are classified inthe category of pressure or thermal sensitive or both pressure andthermal sensitive. Pressure sensitive as used herein means that by useof a relatively small pressure it develops a bond which requires a greatdeal more force in tension to break. Thermal sensitive means that theapplication of heat loosens the bond. The adhesive 16 which joins theloop 17 to the pad 12 may be the same as the adhesive 15 oralternatively it may be a permanent bonding adhesive so long as itsstrength is of the same order or magnitude as adhesive 15, although itneed not necessarily be peelable.

The use and operation of the security device should be apparent from theforegoing description. The pad 12 with the plate combinations l7, 18mounted on it as heretofore described, is pressed down on the mountingsurface 13 causing adhesive layer 15 to bond to the mounting surface.The equipment such as a typewriter, calculator or the like, to beprotected, is bolted to the top of the cover 11 as described, and thecover is then set down over the pad 12 and the locking pins 25 'set intheir respective positions lying within grooves 30 of the cover, therebyfastening the cover down so that its lower rim covers and surrounds thepad and is in substantial contact with the mounting surface 13. Thelocks 24 are then set in their respective positions within openings 23aand 23b and locked so that the locking pins 25 cannot be removed. Underthis condition the equipment, such as the typewriter or the like cannotbe lifted by a person within a short time. for it would re quire alifting force of about 4,000 to 6,000 pounds to separate the bonds dueto adhesive layers 15 and 16, at least for a considerable period oftime. While it may be true that a long continued tensional lift mightfinally result in a separation with less than 4,000 pounds tension thetime required for this to happen could easily lead to the apprehensionof the miscreant attempting the unauthorized transfer or taking of theequipment.

When it is desired to remove the equipment for authorized transfer orservicing the locks 24 are unlocked and withdrawn which uncovers therear ends of locking pins 25 permitting their withdrawal. To facilitatethe withdrawal of the locking pins the rear end of each is provided witha tapped hole 50. Assuming the tapped hold has has an unusual left handthread it can be used for the withdrawal by use ofa pencil-like toolonly having its forward end threaded with an unusual left hand thread toenter hole 50 and thread to its threads. Standard right handed threadedtools will not work in this case. The term unusual as used herein meansthat a left hand and a non-standard pitch is now difficult to find onthe open market. Such a non-standard pitch may be a left hand 10-18 or10-26 thread. The pencillike tool is long enough to extend out throughopenings 230 or 23b while threaded to the lock pin. The locking pin isthen readily pulled out by pulling on the tool. The cover 11 can then bereadily lifted and the bolts or screws fastening the equipment can beremoved to permit transfer or servicing of the equipment.

If it be desired to transfer the entire security device as well as theequipment this can readily be done after the cover is removed, bypeeling off the pad 12 from the mounting base 13. To perform thispeeling operation the plates 170 through 170' are first removed from thetop of the pad. To facilitate this removal, heat is applied over theplates 17 and 18 by suitable heat lamps or the like such as infra redheaters, thereby heating the material to a temperature of about 150Fahrenheit at which temperature the bonding force of the adhesive isgreatly reduced so that these plates can be removed from the pad. Afterremoval of these plates the heating unit is again applied over the padto heat up the pad material to 150 Fahrenheit at which termperature thepad can readily be peeled off the mounting base. The peeling is mosteasily accomplished by starting the peeling operation at a corner of thepad.

The use of rubbery or a foam-like material for the pad and in themountings, as described, promotes quietness ofoperation of machines suchas typewriters and calculators and the like which may be mounted on thecover plate. It is furthermore desirable to fit a rubberlike strip 56 tothe lower rim of sides 22a, 22b, 22c and 22d of the cover 11. Althoughsuch strip is not illustrated in FIG. 3, it is shown in FIG. 6 as astrip containing a groove into which the rim of the cover is fitted sothat sides of the strip extend upward for a short distance at the insideand outside of the rim leaving a thickness of the rubbery materialbetween the rim and the mounting base 13. There are discontinuities inthis strip at the locations of the lock housings 34, the lower parts ofwhich are positioned slightly above the mounting base 13 when the coverwith the strip 56 is brought down against the mounting base.

Although only one specific embodiment of the invention has beendescribed and illustrated in the drawings it will be understood thatvariations within the scope of the invention may readily suggestthemselves to those skilled in the art. For example, the security devicemay be made in any of a number of different sizes and shapes to suitparticular items of equipment with which it is to be used. Furthermore,modifications within the scope of the invention may be made even in theembodiment which is herein illustrated without departing from the scopeof the invention which is limited only by the scope of the appendedclaims.

What is claimed is:

1. An equipment mounting security device comprising an adhesive padadapted to be adhered to a mounting surface, a cover assembly adapted tocover the adhesive pad so that said pad is essentially exposed only tosaid mounting surface and the underside of said cover, means within thecover lockably attaching the cover assembly to the pad, means forattaching an equipment to the outside of said cover from a positionwithin the cover between the cover and the pad and accessible only whensaid cover assembly is unlocked and separated from the pad, saidadhesive pad when adhered to a mounting surface requiring many times theamount of force in tension or shear to separate the pad from the surfacethan the amount of force required to separate the pad from the surfaceby peeling the pad from the surface.

2. An equipment security device comprising: a pad having a top surfaceand a bottom surface; an adhesive layer attached to said bottom surfacefor adhering said pad to a mounting base; first fastening means securedto said top surface; a cover plate having an upper surface and a lowersurface, adapted to cover said pad; equipment attaching means forattaching to said upper surface an equipment to be protected, saidequipment attaching means being detachable from the equipment only fromsaid lower surface; second fastening means secured to said lowersurface; engaging means holding said first fastening means and saidsecond fastening means together so that the cover cannot be removed fromthe pad; and lock means positioned at the cover plate to preventdisengagement of the engaging means when the lock means is locked, saidadhesive layer being characterized by requiring, when adhered to suchmounting base, many times the amount of force in tension and in shear toseparate the pad from the base than the amount of force required toseparate the pad from the base by peeling the pad from the base.

3. A device according to claim 2 in which the first fastening meanscomprises a loop means and the attaching means comprises a passage meanswhich registers with the loop means when the cover plate covers said padand the engaging means is a device which engages said loop means andsaid passage means.

4. A device according to claim 3 in which the engaging means comprises apin means and the loop means comprises a first passageway means and thepassage means comprises a second passageway means which registers withthe first passageway means when the cover plate covers the pad, the pinbeing dimensioned to fit through said first and second passageway means.

5. A device according to claim 4 in which each passageway meanscomprises a plurality of passageways spaced apart and the pin meanscomprises as many pins as the number of passageways of the pad.

6. A device according to claim 2 in which the adhesive is heatsensitive.

7. A device according to claim 2 in which the adhesive is heat sensitiveand pressure sensitive.

8. A device according to claim 2 in which said first fastening meanscomprises a plate secured to said top surface by adhesive havingcharacteristics similar to the adhesive layer attached at said bottomsurface of the pad and the loop means comprises loops rising from saidplate means.

9. An equipment security device comprising a pad having a top surfaceand a bottom surface; a layer of adhesive material attached to saidbottom surface for adhering said pad to a mounting base; a second layerof adhesive material attached to said top surface; plate means adheredto said second adhesive layer, said plate means being provided with aplurality of members raised above the surface of the plate means,providing a plurality of aligned openings; a cover plate having an uppersurface and a lower surface adapted to cover said pad and plate means;equipment-attaching means for attaching to said upper surface anequipment to be protected, said equipment-attaching means beingdetachable from the equipment only from said lower surface; lug meansdepending from said lower surface, said lug means containing a pluralityof aligned holes adapted to align with said openings of the plate means;pin means adapted to pass through said aligned openings and alignedholes to prevent removal of said cover from the pad; and lock meanspositioned at a part of the cover plate to prevent disengagement of thepin means from the openings and holes when the lock means is locked;said adhesive layers being characterized by requiring, when adhered tosaid mounting base and to said plate means, many times the amount offorce in tension and in shear to separate the pad from the base and theplate means from the pad, than the amount of force required to make theseparation by peeling the pad from the base.

10. A device according to claim 9 in which the plate means comprises afirst pair of plates spaced from each other with openings in alignmentand a second pair of plates spaced from each other with openings inalignment, the axes through the openings of said second pair beingparallel to the axes of the openings through said first pair, and saidlug means comprises a first pair of spaced lugs positioned to locatetheir holes adjacent the respective openings of the first pair of platesand a second pair of spaced lugs positioned to locate their holesadjacent the respective openings of said second pair of plates; and thepin means comprises a first pin adapted to pass through the openings andholes of the first pair of plates and first pair of lugs and a secondpin adapted to pass through the openings and holes of the second pair ofplates and second pair of lugs; and the lock means comprises anindividual lock for each pin, whereby each lock can maintain itsrespective pin in position through the openings and holes of itsrespective plates and lugs.

P0405) UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No.3,850,392 Dated November 26,l974

Inventor) JAMES sco'r'r GASSAWAY It is certified that error appears inthe above-identified patent and that said Letters Patent are herebycorrected as shown below:

Address "Glendow" should read -Glendon- Abstract Line 20 cancel "the"second occurrence Col. 6, line '30 "'K440sYEc4cDM3" should read--K#4408YEC4CDM3-- Col 7, line 9 "hold" should read hole-'- Col. 7, linecancel "has" second occurrence C010 '8, line 53 insert --mean's-- after"pin" A Signed and sealed this 4th day of March 1975.

(SEAL) Attest: v

C. MARSHALL DANN RUTH C MASON Commissioner of Patents Attesting Officerand Trademarks

1. An equipment mounting security device comprising an adhesive padadapted to be adhered to a mounting surface, a cover assembly adapted tocover the adhesive pad so that said pad is essentially exposed only tosaid mounting surface and the underside of said cover, means within thecover lockably attaching the cover assembly to the pad, means forattaching an equipment to the outside of said cover from a positionwithin the cover between the cover and the pad and accessible only whensaid cover assembly is unlocked and separated from the pad, saidadhesive pad when adhered to a mounting surface requiring many times theamount of force in tension or shear to separate the pad from the surfacethan the amount of force required to separate the pad from the surfaceby peeling the pad from the surface.
 2. An equipment security devicecomprising: a pad having a top surface and a bottom surface; an adhesivelayer attached to said bottom surface for adhering said pad to amounting base; first fastening means secured to said top surface; acover plate having an upper surface and a lower surface, adapted tocover said pad; equipment attaching means for attaching to said uppersurface an equipment to be protected, said equipment attaching meansbeing detachable from the equipment only from said lower surface; secondfastening means secured to said lower surface; engaging means holdingsaid first fastening means and said second fastening means together sothat the cover cannot be removed from the pad; and lock means posiTionedat the cover plate to prevent disengagement of the engaging means whenthe lock means is locked, said adhesive layer being characterized byrequiring, when adhered to such mounting base, many times the amount offorce in tension and in shear to separate the pad from the base than theamount of force required to separate the pad from the base by peelingthe pad from the base.
 3. A device according to claim 2 in which thefirst fastening means comprises a loop means and the attaching meanscomprises a passage means which registers with the loop means when thecover plate covers said pad and the engaging means is a device whichengages said loop means and said passage means.
 4. A device according toclaim 3 in which the engaging means comprises a pin means and the loopmeans comprises a first passageway means and the passage means comprisesa second passageway means which registers with the first passagewaymeans when the cover plate covers the pad, the pin being dimensioned tofit through said first and second passageway means.
 5. A deviceaccording to claim 4 in which each passageway means comprises aplurality of passageways spaced apart and the pin means comprises asmany pins as the number of passageways of the pad.
 6. A device accordingto claim 2 in which the adhesive is heat sensitive.
 7. A deviceaccording to claim 2 in which the adhesive is heat sensitive andpressure sensitive.
 8. A device according to claim 2 in which said firstfastening means comprises a plate secured to said top surface byadhesive having characteristics similar to the adhesive layer attachedat said bottom surface of the pad and the loop means comprises loopsrising from said plate means.
 9. An equipment security device comprisinga pad having a top surface and a bottom surface; a layer of adhesivematerial attached to said bottom surface for adhering said pad to amounting base; a second layer of adhesive material attached to said topsurface; plate means adhered to said second adhesive layer, said platemeans being provided with a plurality of members raised above thesurface of the plate means, providing a plurality of aligned openings; acover plate having an upper surface and a lower surface adapted to coversaid pad and plate means; equipment-attaching means for attaching tosaid upper surface an equipment to be protected, saidequipment-attaching means being detachable from the equipment only fromsaid lower surface; lug means depending from said lower surface, saidlug means containing a plurality of aligned holes adapted to align withsaid openings of the plate means; pin means adapted to pass through saidaligned openings and aligned holes to prevent removal of said cover fromthe pad; and lock means positioned at a part of the cover plate toprevent disengagement of the pin means from the openings and holes whenthe lock means is locked; said adhesive layers being characterized byrequiring, when adhered to said mounting base and to said plate means,many times the amount of force in tension and in shear to separate thepad from the base and the plate means from the pad, than the amount offorce required to make the separation by peeling the pad from the base.10. A device according to claim 9 in which the plate means comprises afirst pair of plates spaced from each other with openings in alignmentand a second pair of plates spaced from each other with openings inalignment, the axes through the openings of said second pair beingparallel to the axes of the openings through said first pair, and saidlug means comprises a first pair of spaced lugs positioned to locatetheir holes adjacent the respective openings of the first pair of platesand a second pair of spaced lugs positioned to locate their holesadjacent the respective openings of said second pair of plates; and thepin means comprises a first pin adapted to pass through the openings andholes of the first pair of plates and first pair of lugs and a secondpin adapted to pass through the openings and holes of the second pair ofplates and second pair of lugs; and the lock means comprises anindividual lock for each pin, whereby each lock can maintain itsrespective pin in position through the openings and holes of itsrespective plates and lugs.